BOO: Throwback Pics of Celebs' Childhood Halloween Costumes!

Happy Halloween! The spookiest day of the year is FINALLY here and there's so much to look forward to: Amazing costumes, trick-or-treating, and of course, tons and tons of candy.

Not only is today Halloween but it's also Throwback Thursday! M put together a special edition of our usual celeb TBT game. We have baby pics of some of your fave celebs from previous Halloweens. Can you tell which star is hiding behind the Halloween costume? To reveal the answer, just double-click or highlight the black box!

Click through the gallery for a special Halloween edition of the Throwback Thursday game. How many did you get right? Tell us in the comments below!